/*
 * Copyright (c) 2008 VMware, Inc.
 * Copyright (c) 2009 John Pritchard, WTKX Project Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package wtkx.util;

import java.util.Iterator;

/**
 * Immutable implementation of the {@link Iterator} interface.
 *
 * @author gbrown
 */
public class ImmutableIterator<T> implements Iterator<T> {
    Iterator<T> iterator;

    public ImmutableIterator(Iterator<T> iterator) {
        if (iterator == null) {
            throw new IllegalArgumentException("iterator is null.");
        }

        this.iterator = iterator;
    }

    public boolean hasNext() {
        return iterator.hasNext();
    }

    public T next() {
        return iterator.next();
    }

    public void remove() {
        throw new UnsupportedOperationException();
    }
}
